New energy vehicle charging station overall power distribution project
Project overview
Provide capacity assessment, capacity expansion application, high and low voltage power distribution transformation, charging pile supporting integrated services for stations, deploy 12 120kW DC fast charging piles, and support orderly charging dispatch and operation monitoring platform.
Indonesia fit
The "charging pile procurement" is preceded by the integrated delivery of capacity assessment, PLN installation, equipment selection, installation and commissioning, and after-sales operation and maintenance, helping owners avoid secondary purchases due to mismatches in transformer capacity, incoming switch levels, and metering solutions; the solution is adapted to Indonesia's 230/400V, 50Hz low-voltage system and local high-temperature and high-humidity environment, and reserves busbar and cable margin for subsequent upgrades from 120kW to 180kW fast charging.
Professional configuration and standards
The charging equipment is configured according to the requirements of IEC 61851, IEC 62196, and IEC 61439 low-voltage complete cabinets. The AC side adopts 0.4kV power distribution cabinet, B/C level SPD surge protection, Type A/Type B leakage protection and 0.5S level meter; the outdoor cabinet adopts IP54/IP65 protection, galvanized plate powder coating or 304 Stainless steel key parts are factory-completed with insulation, voltage resistance, grounding continuity, temperature rise and full-load aging tests to facilitate SNI/PUIL and PLN acceptance.
Key specification comparison table
| Configuration items | common practice | Optimized delivery specifications and value |
|---|---|---|
| Access capacity | Conventional single pile independent procurement: stacking capacity based on the power of a single unit | Optimization plan: Based on 12 units of 120kW simultaneous coefficient + orderly charging calculation, reduce capacity increase pressure by about 30% |
| Protect configuration | Ordinary circuit breaker + simple leakage protection | Optimization solution: MCCB/ACB graded protection, SPD, ground monitoring, Type B leakage protection, adapted to DC leakage risks |
| Certification testing | Only equipment certificates are provided | Optimization plan: Provide IEC type test, factory FAT, on-site SAT, PLN/SNI file package to shorten the acceptance cycle |
Delivery challenges and solutions
a.Challenge: The original power distribution capacity in Jakarta's old town is insufficient, and the approval process for PLN capacity expansion is cumbersome and costly.
Solution: Provide capacity assessment + PLN installation agency services, and also configure an intelligent orderly charging control system, which reduces peak-shift scheduling by 30% and reduces the demand for capacity expansion by 30%, shortening the installation cycle by 30%.
b.Challenge: The voltage of the local power grid fluctuates greatly, and fast charging of multiple piles at the same time is prone to bus voltage drops and tripping.
Solution: Intelligent voltage stabilizing and compensating devices were installed and the power distribution bus structure was optimized, reducing the tripping complaint rate by 80%.
c.Challenge: The operator lacks localized operation and maintenance capabilities and has low troubleshooting efficiency.
Solution: Build a full-link operation monitoring platform, provide automatic fault alarm + remote reset, and train local operation and maintenance personnel to increase site operation efficiency by 40%.
Project results
The construction cost of a single station was saved by 200,000 yuan compared with the industry average, and it was put into operation 1.5 months ahead of schedule; the measurement accuracy reached 0.5 level, and the revenue reconciliation had zero error.